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FIR filters
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<blockquote data-quote="Tim McCulloch" data-source="post: 148749" data-attributes="member: 67"><p>Re: FIR filters</p><p></p><p></p><p></p><p>I'm FIR/IIR agnostic. The primary advantage of FIR filters is the minimal impact on phase, with the trade off being latency. The main thing is to know what you want to accomplish with the filter (to start with), i.e. what Dave Gunness learned while investigating loudspeaker anomalies and which of those could be negated with pre-processing of the audio signal and which could not. If something cannot be "fixed" there is no point in pursuing it but on the flip side if something can be improved it's a matter of which tool(s) is appropriate for the job.</p><p></p><p>You're seeing more FIR filters in use because the cost of in-the-box DSP has come down to the point that manufacturers can utilize FIR filters at no greater cost than IIR filters.</p></blockquote><p></p>
[QUOTE="Tim McCulloch, post: 148749, member: 67"] Re: FIR filters I'm FIR/IIR agnostic. The primary advantage of FIR filters is the minimal impact on phase, with the trade off being latency. The main thing is to know what you want to accomplish with the filter (to start with), i.e. what Dave Gunness learned while investigating loudspeaker anomalies and which of those could be negated with pre-processing of the audio signal and which could not. If something cannot be "fixed" there is no point in pursuing it but on the flip side if something can be improved it's a matter of which tool(s) is appropriate for the job. You're seeing more FIR filters in use because the cost of in-the-box DSP has come down to the point that manufacturers can utilize FIR filters at no greater cost than IIR filters. [/QUOTE]
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